four americans, you'll recall, were killed, including ambassador chris stevens. there are a lot of questions about what happened. margaret brennan has been following this story and she's at the start tonight. margaret? >> reporter: good evening, scott. the cretary of state reacted to pressure from the public, the press, and the house oversight committee to address the controversy around the administration's response to that attack on the u.s. consulate in benghazi. were there multiple requests for increased security in tripoli and benghazi and can you address whether washington or your office rejected those requests? >> well, let me start by cautioning everyone against seizing on any single statement or piece of information to draw a final conclusion. over the course of this review there will naturally be a number of statements made, some of which will be borne out and some of which will not. >> reporter: clinton and her aides have consistently pointed to intelligence reports that indicated there was no threat to the u.s. mission and that it was intelligence agen